Gases In The Atmosphere
Akopọ
The air you breathe is a mixture of gases with a remarkably stable composition. Nitrogen makes up about four-fifths of the atmosphere, oxygen about one-fifth, and the remaining fraction includes carbon dioxide, water vapour, and noble gases. Despite carbon dioxide being present in tiny amounts, its role in climate change makes it one of the most discussed molecules on the planet.
In this lesson you will learn the composition of dry air, explore experiments that measure the percentage of oxygen, study the combustion of elements in oxygen, examine how carbon dioxide forms from the thermal decomposition of metal carbonates, and understand why rising carbon dioxide levels contribute to climate change.
Awọn Afojusun
- Know the approximate percentages by volume of the four most abundant gases in dry air
- Understand how to determine the percentage by volume of oxygen in air using experiments
- Describe the combustion of elements in oxygen, including magnesium, hydrogen and sulfur
- Describe the formation of carbon dioxide from the thermal decomposition of metal carbonates
- Know that carbon dioxide is a greenhouse gas and that increasing amounts in the atmosphere may contribute to climate change
- Determine the approximate percentage by volume of oxygen in air using a metal or a non-metal
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Ṣe ìdánrawò káàdì wọ̀nyí nínú áàpù
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Ìdánwò Ẹ̀kọ́
Oriire fun ipari ẹkọ lori Gases In The Atmosphere. Ni bayi ti o ti ṣawari naa awọn imọran bọtini ati awọn imọran, o to akoko lati fi imọ rẹ si idanwo. Ẹka yii nfunni ni ọpọlọpọ awọn adaṣe awọn ibeere ti a ṣe lati fun oye rẹ lokun ati ṣe iranlọwọ fun ọ lati ṣe iwọn oye ohun elo naa.
Iwọ yoo pade adalu awọn iru ibeere, pẹlu awọn ibeere olumulo pupọ, awọn ibeere idahun kukuru, ati awọn ibeere iwe kikọ. Gbogbo ibeere kọọkan ni a ṣe pẹlu iṣaro lati ṣe ayẹwo awọn ẹya oriṣiriṣi ti imọ rẹ ati awọn ogbon ironu pataki.
Lo ise abala yii gege bi anfaani lati mu oye re lori koko-ọrọ naa lagbara ati lati ṣe idanimọ eyikeyi agbegbe ti o le nilo afikun ikẹkọ. Maṣe jẹ ki awọn italaya eyikeyi ti o ba pade da ọ lójú; dipo, wo wọn gẹgẹ bi awọn anfaani fun idagbasoke ati ilọsiwaju.
- What is the approximate percentage of nitrogen in dry air? A) 21% B) 78% C) 0.9% D) 0.04% Answer: B
- Which gas is tested for by using limewater? A) Oxygen B) Hydrogen C) Carbon dioxide D) Nitrogen Answer: C
- What is produced when magnesium burns in oxygen? A) Magnesium hydroxide B) Magnesium carbonate C) Magnesium oxide D) Magnesium chloride Answer: C
- Which of the following is a greenhouse gas? A) Nitrogen B) Oxygen C) Argon D) Carbon dioxide Answer: D
- What colour flame is seen when sulfur burns in oxygen? A) White B) Yellow C) Blue D) Red Answer: C
Ṣiṣẹ́ lórí àwọn ìbéèrè wọ̀nyí nínú ohun èlò náà
Ṣiṣẹ́ lórí àwọn ìbéèrè wọ̀nyí nínú ohun èlò náà
Awọn Iwe Itọsọna Ti a Gba Nimọran
Ẹ̀kọ́ síwájú láti àwọn orísun ṣíṣí
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Abala ìwé ẹ̀kọ́
Climate and the Effects of Global Climate Change
Define global climate change
"Biology: Climate and the Effects of Global Climate Change" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/biology/pages/44-5-climate-and-the-effects-of-global-climate-change. Access for free at https://openstax.org/books/biology/pages/1-introduction
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Abala ìwé ẹ̀kọ́
Occurrence, Preparation, and Properties of Carbonates
Describe the preparation, properties, and uses of some representative metal carbonates
"Chemistry: Occurrence, Preparation, and Properties of Carbonates" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/chemistry/pages/18-6-occurrence-preparation-and-properties-of-carbonates. Access for free at https://openstax.org/books/chemistry/pages/1-introduction
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